Column-mold.



A. J. DESLAURlERS.

- CO'LUMN MOLD. APPLICATION FILED 11ov.1s.191e.

1,291,781. Patented Jan. 21, 1919.

2 SHEETS-SHEET 1.

fi 1 Wrmaases A. J. DESLAURIERS.

COLUMN MOLD.

APPLICATION FILED NOV. 16. 1916. I

1,291,781. Patented Jan. 21,1919.

2 SHEETS-SHEET 2- Wxmmaas 0%, Gym.

ALBERT .T. DE SLAURIERS, OF

COLUMN MOLD COMPANY, OF ST. PAUL, MINNESOTA,

ST. PAUL, MINNESOTA, ASSIGNOR TO DESLAURIERS A. COPARTNERSHIP,

COLUMN -MOLD.

Specification of Letters Patent.

Patented Jan. 21, 1919.

Application filed November 16, 1916. Serial N 0. 131,684.

To all whom, it may concern Be it known that I, ALBERT J. DESLAURI- ERS, a citizen of the United States, residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented certain new and useful Improvements in Column- Molds, of which the following is a specification.

My invention relates to improvements in sectional sheet metal molds for constructing concrete columns and consists particularly in means for locking together the meeting edges of each mold section and for adjusting the mold in height and circumference and further consists in the improved features of construction and combination hereinafter particularly described and claimed.

eferring to the accompanying drawings forming part of this specification,

Figure 1 is a side elevation of a column mold containing my improved features of invention,

Fig. 2 is a section on line 22 of Fig. 1,

Fig. 3 is an enlarged detail of a portion of the meeting edges of one of the column sections showing cooperating locking means,

Fig. 4 is a section on line H of Fig. 3 shown partly in elevation, and

Fig. 5 is a top view of the parts shown in Fig. 3.

Fig. 6 is a vertical sectional view through I()me of the clamp rings and the connecting and Fig. 7 is a diagrammatic plan view of a portion of the column mold showing the method of assembling the same.

In carrying out my invention I construct a mold as shown in Fig. 1 of a plurality of sections 1 to form a mold of the desired height, the top section 2 forming a surrounding collar to overlap the bottom of a suitable cap mold (not shown). To form a column a'plurality of the sections 1 with p a supporting collar 2 are arranged one above the other with their edges abutting. Suitable joint sections or bands3 are placed in covering position over the abutting ends of the sections and secured as by bolts 4.

Each section is made up of a plurality of plates B, angles 5 being secured along the meeting edges of the plates as by means of rivets 6, said angles being spaced apart at their ends and constituting outwardly extending flanges. The angles 5 are adapted to be locked together by cooperating bolt and wedge members 7 and 8. The bolts 7 are each formed at one end with a flanged head portion 9 and with a slotted opening 10 at same distance from the head 9. The members 8 are in the form of wedges. In looking the angles 5 a necessary number of bolts 7 are passed through the openings 11 in the flanges, wedge members 8 being then inserted in the slotted openings 10 and driven down to draw the heads 9 of the bolt members against the outer face of the adja cent flange 5, the wedge members bearing against the outer face of the opposite flange 5. The flanges 5 are thus held tightly clamped together between the heads 9 of the key members and the Wedge members 8.

Referring to Fig. 4, it will be noted that the openings 11 in the flanges are laterally considerably wider than the bolt 7 thereby providing a large amount of clearance so that the bolts can be inserted (Fig. 7) in the angles when preliminarily set up when it is desired to use various widths of plates in forming a column.

As shown in Fig. 7, the narrower plates B which are primarily intended for small columns, but which are used as building u elements in larger columns are of small radius as compared with plates for large columns and require therefore to be forced or bent to conform to the larger radius of the column to be built up.

Obviously if the clearance 18 were not provided, the insertion of the bolt 7, when narrow sections are used in connection with wider ones, sections would then take the form of an involute curve which would of necessity have to be sprung by hand outwardly in order to insert the last section to complete the column.

In practice when it is desired to assemble a column, all the sections B of the same width are assembled endwise to the full intended height of the column by means of the bands 3, each section B carrying its own portion of the band.

Thus when all the sections B of the various widths have been assembled to the full height of the column, the sections are car ried to the place of erection, (which is usually considerably blocked by false-work used to sustain the floors) where the various aswould be very diflicult since the sembled sections are set upright as shown in Fig. 7 and the bolts 7 are loosely inserted, which is made possible by the clearance 18.

When the sections B are thus set loosely in position, the wedges 15 are driven home, drawing the angles 5 tightly together and thereby springing the plates of small radius to conform with the larger curvature of the column.

\Vhen the angles 5 are almost drawntight face to face, the inner faces of the plates B are rendered flush by driving a wedge shaped tool such as a cold chisel into the clearance space 18 between the angle and the bolt 7, forcing the faces of the two cooperating angles 5 at that point to register perfectly and thereby render the inner faces of adjacent plates flush.

Thus by the use of the sectional connecting band 3, a portion thereof being carried by each of the plates B, the column may be assembled in sections measuring the full height thereof and conveniently assembled in position as above explained."

The joint sections or bands 3 are each divided in lengths corresponding to the widths of the supporting plates B so that as shown in Fig. 2 there is a separation between the divisions of the joint sections 3 corresponding to the line of separation between the plates B and supporting angles 5. The bands 3 as shown by the drawings are thus split in line with the splitting of the mold sections.

Suitable clamping rings 12 are placed around the columns in covering position over the joint sections 3 and also at desired positions along the length of the column, the angles 5 being separated to accommodate said rings, so that the inner face of the rings 12 may contact unbrokenly circumferentially with the outer surface of all the plates B to insure a circular section in the column. The clamping ring 12 is in the drawings shown in the form of a split col lar, the two halves of the collar having hinge connection 13, the hinge having pivotal support 14 upon one half of the collar and being removably secured to the other half of the collar by a wedge 15 extending through registering slots in the hinge and collar. Thus the inner faces of the two halves of the ring 12 present smooth unbroken sur faces to contact directly with the column mold plates. The opposite ends of the collar halves may be connected by a suitable clamp 16 actuated by a handle 17 whereby to allow the collar to be secured in a clamping position around the column. It will of course be understood that the column mold fi'opies of this patent may be obtained for five cents each, by addressing the sections are formed of thin enough material so that if one plate or section is taken out the rest of the section may be drawn together and secured by the bolt and wedge members 7 and 8 to form a section of smaller diameter.

I claim:

1. The combination of a circular built up column mold made up of longitudinal variously curved bendable sheet metal inclosing sections adapted to be bolted together edgewise to render their curvature uniform, slotted headed bolts, wedges for said slots, flanges extending outwardly from the adjacent longitudinal edges of said inclosing sections and radially disposed relative to the center of said mold when said mold is in assembled state, said sections being adapted to bc preliminarily set up so as to bring the outer faces of said flanges cooperatingly adjacent but not in facial contact with each other, said flanges having registering openings larger than said headed bolts so as to receive said bolts when said sections are in said preliminary set up position and before said sections are bent to final circular form for the purpose specified.

2. The combination of a mold of the class described, made up of a longitudinal split sheet metal inclosing wall, a plurality of outwardly. extending cooperating; flanges, spaced end for end along the longitudinal edges of said wall, a circular removable clamping ring encircling the mold between the ends of said flanges, said sheet metal inclosing wall being controlled solely by said clamping ring in the spaces between said flanges for the purpose specified.

3. The combination of a mold of the class described, comprising a plurality of cylindrical sections of uniform diameter, one above the other, each of said cylindrical sections being longitudinally split to form circumferential sections, the splits in the superimposed cylindrical sections being in alinement, flange connections between the circumferential sections and a bolt fastened connecting band to cover the butt joint between the superimposed cylindrical sections, said band being split at its inter-section with said longitudinal splits, so that the co operating circumferential sections .may be preliminarily separately joined together endwise.

In testimony whereof I aflix my signature in presence of two witnesses.

ALBERT J. DESLAURIERS'.

Witnesses:

' JoHNson,

BEATRICE BROWN.

Commissioner of! Patents,

Washington, D. G. 

